NSTEMI
Also written as: NSTEMI — Non-ST-Elevation Myocardial Infarction
Non-ST-elevation myocardial infarction, a type of heart attack that requires urgent intervention but may not show characteristic ST elevation on ECG.
Full Definition
Non-ST-elevation myocardial infarction (NSTEMI) represents a form of acute coronary syndrome where myocardial tissue death occurs without the characteristic ST-segment elevation visible on electrocardiogram. This condition typically results from partial occlusion of a coronary artery and requires prompt cardiac catheterization and potential percutaneous intervention. NSTEMI patients often present with elevated cardiac biomarkers and may have more subtle ECG changes such as T-wave inversions or ST depressions. The management approach differs from STEMI in timing and urgency of intervention.
Usage
Usage note: Always capitalize as NSTEMI; avoid hyphenating the full form.
In Context
- "The patient was diagnosed with NSTEMI based on elevated troponin levels and ECG changes." — Medical record documentation
- "NSTEMI guidelines recommend catheterization within 24 hours for high-risk patients." — Clinical protocol